National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service
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MIDDLE FORK FEATHER RIVER - PORTOLA (MFTC1)
Latitude: 39.82º NLongitude: 120.44º WElevation: 4850 Feet
Location: Plumas County in CaliforniaRiver Group: Lower Sacramento
Issuance Time: Sep 01 2015 at 7:35 AM PDTNext Issuance: Sep 02 2015 at 9:00 AM PDT
Monitor Stage: 7.0 FeetFlood Stage: 8.5 Feet
Verification - Historical Graphical RVF
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Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2014
394
3.97
Feb 12, 2014
2013
942
5.19
Dec 5, 2012
2012
1,342
5.82
Mar 19, 2012
2011 4,851 9.03 Mar 17, 2011
2010
774
4.88
Feb 28, 2010
 Historical High Stage/Flow Events (Period of Record - Oct 1968 to Present)
1969
7,640
10.62
Jan 21, 1969
1971
6,580
10.07
Mar 27, 1971
1980
5,690
9.56
Jan 14, 1980
1970 4,970 9.11 Jan 25, 1953
2011 4,851 9.03 Mar 17, 2011
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ071)
Tonight: Clear. Lows 39 to 49. West winds 10 to 20 mph with gusts up to 30 mph in the evening becoming light.

Wednesday: Sunny in the morning then becoming partly cloudy. Highs 73 to 83. Light winds becoming southwest 15 to 25 mph with gusts up to 35 mph in the afternoon.

Wednesday Night: Partly cloudy. Areas of blowing dust in the evening. Lows 36 to 46. Southwest winds 15 to 25 mph with gusts up to 35 mph becoming west around 10 mph after midnight.

Thursday: Partly cloudy. Highs 69 to 79. Southwest winds around 10 mph increasing to west 15 to 20 mph with gusts up to 35 mph in the afternoon.

Thursday Night: Partly cloudy in the evening then clearing. Lows 31 to 41. West winds 10 to 20 mph with gusts up to 35 mph becoming northwest up to 10 mph after midnight.

Friday: Partly cloudy with a slight chance of showers. Highs 67 to 77.

Friday Night: Partly cloudy with a slight chance of showers. Lows 29 to 39.

Saturday: Partly cloudy with a slight chance of showers. Highs 62 to 72.

Saturday Night: Partly cloudy. Lows 31 to 41.

Sunday and Sunday Night: Clear. Highs 67 to 77. Lows 33 to 43.

Labor Day through Tuesday: Clear. Highs 76 to 86. Lows 36 to 46.
Impacts - E19 Information
7.0 FeetMonitor Stage. Approximately 2350 cfs. No flooding between Beckwourth and Sloat California.
7.5 FeetSome areas of very minor out of bank flow in reach between Beckwourth and Sloat California. Approximately 2850 cfs.
8.0 FeetSome areas of minor out of bank flow in reach between Beckwourth and Sloat California, including Portola. Approximately 3440 cfs.
8.5 FeetFlood Stage. Some minor lowland flooding in reach between Beckwourth and Sloat California, including Portola. Approximately 4100 cfs.
9.0 FeetMinor flooding of lowlands, rural roads, agricultural areas and some low structures between Beckwourth and Sloat California, including Portola. In Portola, water as high as 2 ft below CA Hwy 70 road surface. Water nearing Sleepy Pines Motel and just below propane tanks on Hwy 70. About 2 feet below foundations of Veterans Hall and low homes along river near Hwy 70. South end of West Street in Portola floods. Portion of CA Hwy 89 near Clio begins to flood. Approximately 4800 cfs. Like flood of 3/17/2011.
9.5 FeetModerate flooding of lowlands,roads and low-lying structures in reach from Beckwourth to Sloat California, including Portola. In Portola, Sleepy Pines Motel on CA Hwy 70 begins to experience some minor flooding. Water near bottom of large propane tanks along Hwy 70. South end of West Street floods, nearing lowest homes. River within about a foot of foundation of Veterans Hall and some low homes along river. CA Hwy 89 near Clio flooded. Approximately 5600 cfs, like flood of 1/14/1980.
10.0 FeetModerate flooding of lowlands, structures and roads from Beckwourth to Sloat California, including Portola. Sleepy Pines Motel and other low structures along river in Portola flood. Evacuation of homes on south end of West Street likely to begin. Sewage ponds in Portola may exceed capacity and may need to release to river. River near foundation of Veterans Hall in Portola. CA Hwy 89 near Clio flooded. Approximately 6450 cfs. Like flood of 3/27/1971.
10.5 FeetMajor (near record) flooding of lowlands, roads, railroads, homes, businesses and structures along river from Beckwourth to Sloat California, including Portola...with significant damage. Approximately 7400 cfs. Like record flood of January 21 1969 (7640 cfs).
11.0 FeetMajor (record) flooding of homes, businesses, structures, roads, railroads, bridges from Beckwourth to Sloat California, including Portola. Approximately 8400 cfs. Before gage record, this was exceeded during floods of 2/21/1927, 3/26/1928, 4/6/1952, 12/23/1955, 2/1/1963, 12/24/1964, 1/2/1997. In the 1/2/1997 flood, extensive damage (over $90 million in 1997 dollars) to homes, bridges, roads and railroads. Flooding caused a 50 ft section of CA Hwy 70 between Blairsden and Sloat to collapse.
Product Disclaimer

This river graphic is not intended to serve as a substitute for official flood watches, warnings, advisories, or statements issued by the NWS Reno Weather Forecast Office. Observations are preliminary and subject to change. River levels identified as "forecast" should be consistent with those contained in official NWS products. River levels identified as "guidance" have significant uncertainty due to future weather or reservoir regulation and are provided for planning purposes only.

Observed Data Credit
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Raw streamflow data is provided by the California Department of Water Resources.
View CA DWR Data for this station location.